Delete IPython support in original location

pyopencl/ipython.py

-from __future__ import division
-
-from IPython.core.magic import (magics_class, Magics, cell_magic)
-
-import pyopencl as cl
-
-from warnings import warn
-warn("pyopencl.ipython is deprecated. Use pyopencl.ipython_ext instead.")
-
-
-@magics_class
-class PyOpenCLMagics(Magics):
-    @cell_magic
-    def cl_kernel(self, line, cell):
-        try:
-            ctx = self.shell.user_ns["cl_ctx"]
-        except KeyError:
-            ctx = None
-
-        if not isinstance(ctx, cl.Context):
-            ctx = None
-
-        if ctx is None:
-            try:
-                ctx = self.shell.user_ns["ctx"]
-            except KeyError:
-                ctx = None
-
-        if ctx is None:
-            raise RuntimeError("unable to locate cl context, which must be "
-                    "present in namespace as 'cl_ctx' or 'ctx'")
-
-        prg = cl.Program(ctx, cell.encode("utf8")).build()
-
-        for knl in prg.all_kernels():
-            self.shell.user_ns[knl.function_name] = knl
-
-
-def load_ipython_extension(ip):
-    ip.register_magics(PyOpenCLMagics)